Combined door-bell and burglar-alarm.



C. B. PAGE.

COMBINED DOOR BELL AND BURGLAR ALARM.

APPLICATION FILED APR. 20, 1912.

1,057,766. Patented Apr. 1, 1913.

anvemtoz UNITED STATES PATENT OFFICE.

CLIFFORD 13. PAGE, OF JACKSON, TENNESSEE.

COMBINED DOOR-BELL AND BURGLAR-ALARM.

To all whom-it may concern:

Be it known that I, CLIFFORD B. PACE, a citizen of the United States,residing at Jackson, in the county of Madison and State of Tennessee,have invented certain new and useful Improvements in Combined Door-Bells and Burglar-Alarms; and I do declare the following to be afull,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters and figures of reference marked thereon, which form a part ofthis specification.

This invention relates to a combined bell and burglar alarm and has forits object to provide a device operated electrically whereby themovement of a door knob in either direction will close an electricalcircuit to sound the bell.

Vith this object in View the invention consists in the novelconstruction of the parts andparticularly in the novel construction andarrangement of the circuit maker arranged in such manner that the samecan be quickly and easily thrown into position in such manner thatmovement of the door knob in either direction will not close theelectrical circuit to sound the bell.

The invention also consists in the construction which provides forutilizing the hinges of the door as a part of the electrical circuit insuch manner that frequent opening and closing of the door will have noeffect upon the conductors over which the electrical current flows.

The invention further consists in certain other novel details ofconstruction and in combinations of, parts, all of which will be firstfully described and afterward specifically pointed out in the appendedclaims.

Referring to the accompanying drawing: Figure 1 is a fragmentary viewillustrating portions of a door and a portion of the jamb or casingtherefor. Fig. 2 is a vertical sectional view through the plates andillustrating the arrangement of the parts, and Fig. 3 is a fragmentaryView illustrating the circuit maker thrown out of operative position.

Like numerals of reference indicate the same parts throughout theseveral figures in which:

The position of the door knob is illustrated in dotted lines in Fig. 1,which door knob is as usually mounted on a rectangular staffSpecification of Letters Patent.

Application filed April 20, 1912.

Patented Apr. 1, 1913.

Serial No. 692,202.

1 upon which staff is arranged a crank 2, said crank 2 having apreferable flexible vertical metallic extension 3 secured thereto in themanner as shown in Fig. 1.

4 indicates the bell, 5 is the battery, and 6 indicates the electricalcircuit which, as will appear from Fig. 1, leads to both of the doorhinges 7 to which hinges the wires of the circuit are electricallyconnected. The door knob plate 8 is also electrically connected to thelower hinge 7 while the plate 9 upon which the circuit maker is mountedis electrically connected to the upper hinge 7 the said plates 8 and 9being normally out of electrical contact as shown in Figs. 1 and 2.

On the vertical sides of the plate 9 are disposed two upwardly turnedlugs 10 within which the cross bar 11 is pivoted at 12 in the manner asshown in Fig. 1, and upon said cross bar 11 are arranged two horizontalextending metallic posts 13.

Arranged on the plate 9 and disposed directly under the transverse bar11 is a leaf spring let having one end 15 secured to the plate 9, theend 16 being a free end in such manner that said spring is capable ofdepression in the manner as shown in Fig. 3. The said leaf spring 14 isnormally in engagement with the bottom surface of the transverse bar 11and as the said spring is provided about centrally with a depression 17the tension of the spring 14 normally holds the plate in position shownin Fig. 2 and the pins 13 in position in Fig. 2 which are in the path ofmovement of the flexible metallic extensions 3, the said two pinsstraddling the said extensions 3 in the manner as shown in Fig. 1.

Having thus described the several parts of this invention its operationis as follows: The elements being assembled in the manner as shown inthe drawing and the transverse bar 11 and extending pins 13 being innormal position as shown in Figs. 1 and 2 rotation of the door knob ineither direction will carry the flexible extension 3 into either one ofthe positions shown in dotted lines in Fig. 1 thus closing theelectrical circuit and causing the bell 4: to be sounded, the bellcontinuing to sound as long as the circuit is closed in the mannerdescribed, but ceasing as soon as the flexible connection 3 leaves itscontacting post 13 to assume its normal position shown in full lines inFig. 1; thus the bell is not sounded upon the return movement of thedoor knob to its normal position as will be clearly apparent from aninspection of the accompanying drawing. As it is necessary to provide acutout so that at times the door can be opened without sounding the bellI have provided a very simple and novel construction above described andin order to effect an absolute cutout of the bell either one of theposts 18 can be manipulated in such manner as to rotate the transversebar 11 in such manner that the said bar 11 and extending posts 13 arethrown down mto position shown in Fig. 8 in which position the posts 13are out of the path of the movement of said flexible connection 3 insuch manner that the door knob is free to be rotated in either directionwithout closing the circuit. As the leaf spring 14 is provided with acentral depression 17 as heretofore described the edge of the transversebar 11 is forced into said depression 17 and is held therein in themanner as shown in Fig. 3 until it is desired to again bring the postsinto the path of movement of the flexible connection 3.

Having thus fully described the invention what I claim as new and desireto secure by Letters Patent is 1. A combined door bell and burglar alarmcomprising an electric circuit, a flexible member connected to the doorknob staff of a door, said door knob stafl and flexible member beingarranged in said electric circuit, a metal plate associated with thesaid flexible member and normally electrically disconnected therefrom,said plate being arranged in the said electric circuit, a source ofcurrent, a bell arranged in said circuitand adapted to be sounded uponthe closing thereof, a horizontal bar rotatably mounted on said plate, apair of posts normally ex tending in a horizontal direction from saidplate, said posts straddling the said flexible member and arranged inthe path of movement thereof, a leaf spring arranged on said plate andin engagement with the lower surface of said bar to maintain the sameand said posts in their proper extended position so as to be engaged bythe said flexible element upon movement thereof in either direction, thesaid leaf spring being provided with a depression therein in such manneras to engage the side edge of said horizontal bar to hold the same andthe said posts thereon in a lowered position when the said member andsaid posts are rotated in such manner as to carry the said posts out ofthe path of-movement of the said flexible element.

2. A combined door bell and burglar alarm comprising an electriccircuit, a source of current and an audible sounding device arranged insaid circuit and adapted to be sounded upon the closing of said circuit,a flexible element adapted to be carried on the door knob staff of adoor, said door knob staff and flexible element being arranged in thesaid circuit, a plate arranged in said circuit and associated with saidflexible element and normally electrically disconnected therefrom, ahorizontal rotatable bar mounted on said plate, a pair of postsextending from said bar straddling said flexible element and arranged inthe path of movement thereof so as to be engaged by said flexibleelement in either direction, and means for maintaining the bar inposition to hold said posts in proper relative operative position and inthe path of movement of the said flexible element and means formaintaining the bar in position to hold said posts in a lowered positionout of the path of movement of the said flexible element in such manneras to permit a free movement of the said flexible element in eitherdirection without engagement with the said posts.

3. A combined door bell and burglar alarm comprising an electriccircuit, a source of current, an audible signaling device arranged insaid circuit and adapted to be sounded upon the closing thereof, aflexible element carried on the door knob staff of a door, said doorknob staff and door being arranged in the said circuit, a pair ofelements arranged in the said circuit and straddling the said flexibleelement and in the path of movement thereof in such man ner that one ofthe said elements will be engaged by the said flexible element uponmovement thereof in either direction to close the circuit, said twoelements being capable of removal out of the path of movement of thesaid flexible element, substantially as described.

In testimony whereof, I aflix my signature, in presence of twowitnesses.

CLIFFORD B. PAGE.

lVitnesses:

C. M. Fonnnsr, C. HUGH DUFFY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). G.

